Urban expansion and environmental risk in the São Paulo Metropolitan Area

Climate Research

Andrea Ferraz Young¹ 

关键词: Climate change;    Disasters;    Intense precipitation;    Flood;    Landslide;    Urban planning;   

DOI  :  10.3354/cr01161

来源: Inter-Research Science Publishing

【 摘 要 】

ABSTRACT: In this study, we simulated the expansion of the São Paulo Metropolitan Area (SPMA)—the largest metropolitan area in Brazil—by the year 2030 using the Dinamica EGO software with data extracted from Landsat TM 7 (orbit point 219076, resolution 30 × 30 m). Based on the urban area in 2008, we used an urban growth scenario to analyze urban expansion up to 2030. Subsequently, we used ArcGIS to integrate the spatial information, combining layers to create risk maps. In this case, environmental risk factors, along with flood and landslide probabilities, were considered in order to identify high-risk areas. By 2030, the urban area was projected to increase by approximately 38.7%, and to cover 3250 km². With this growth, 807 km² of the region (and ~4.27% of urban expansion areas) will be in flood risk zones.

【 授权许可】

Unknown